Lubricator



F. M. ROBY LUBRIGATOR Dec. 4 1923.

Filed April 6. L322 1 3 Sheets-Sheet 1 Wm GITOJEA/IKS- lay Dec. 4 1923..

F. M. ROBY LUBRICATOR Filed April 6, 1922 3 Sheets-Sheet 3 ZEV ZIZVZ 'QR/ Patented Dec. 4;, i923.

FRAKK IVJI. R

entree eerte i or eLnvnLAnn, OHIOQ L BnIon'ron.

Ap plieatien filed April 6 T 0 all whom it may concern: I

Be it known that l, l mnit M. Rent, a cit i zen of the United Eltatesresiding at, Cleve: land, in the county ot Cuyahoga andState of Ohio, have'i'nx' ented a certain new and useful grease to. a bearing My lubricator is especially well adapted, for instance,,for mounting on side rods of locomotives.

The principal objects of the invention are to provide such a device in a form which shall be simples-11d inexpensive in construc; tion, which shall retain its position when once installed, which-shall visibly'indicate its condition as toquantity of containeddlw bricant, and which shall normally remain closed, notwithstanding the jars incident to operation, but which may be readily opened and resupplied with lubricant when. desired.

Another feature is the provision of a cl'on venient handle or tool tor readily opening and closing the lubricator.

These and other reatures of the invention are hereinafter more fully explaiuedin connection with the drawings, which. show preferred embodiments or" the invention.

In thedrawings, 1 is a side elevation of a pair of locomotivedriving wheels, a;connecting' rod and a parallel rod with my lubricators mounted on the end portionsof the latter; Fig.2 is a side elevation of one form of the lubricator with the grease follower in the position ithas when the lnbrica tor is empty; Fig. 3 is a-lplan of this form otlubriea tor; L- is a vertical diametricseetion. on the plane indicated by the linei-4 of Fig. 3, of the lubricator body. with the other pa-rts removed; .Fig. 5 is a vertical diametric. section on the plane indieatedby the line 5-5 of Fig. 3, this view showing the complete lubricate?) in theloaded position, and showing also a handle device which may be employed tor removing the removable parts; Fig. '6 is a sectional side elevation-of the movable parts when they have been removed trom the body, and the handle device carrying the same; Fig. 7 is an edge 19.22. Serial no. 550,096!

view of the handlesshown in Figs. 5 and 6;

Fig 8 is a detail in horizontal section. on the line 8+8 of H19: 6 SllOWlIl the relation or the l elevation of a modified form of lubricator,

withjthe )arts separated for convenience of illustration'lti s. 10 and 11' are horizontal 7 O iandle lugs to the grease follower and the lockmg, ring therefor; Fig. 9 1s aside sections on the correspondingly numbered s Fig. 9; Fig. 12 is a vertical 'diamen. e section, through a portion oit another modified :tormof lubricator; 13, is .a plan of the embodiment shown in Fig. 12. v

Referring first to Figs. 1 to 5 inclusive,1O

indicates the body'of the lub ricator, which is preferably a. single integral easting,:-and which is adapted to bepermaneutly secured to the part 01" themachine which carries it,

as for instance a locomotive. side red: A.

Such side rodhas a cylindrical opening as inFig. a, leading to the. crank pin, and the lubricator body is provided with a sleeve portion lladapted to occupyisuchrecess a. The sleevepreterably hasa portion. of slightly enlarged. diameter as 12, which may either malre a snug tit withthe wall of the recess or may .be threaded to. screw therein to, as desired.- At the upper end of the sleeve; portion is alateraliiiange lwhich rests on. the/top of the rod or other carrying member and is preferably spot welded there to. asindic ted in Fig. 5.

bove thejtlange 1d the body y estendingstandards 15of whichthere .are

preferably three .equally placed.- .Eaeh standard n ergesbelo vw th the flangel and above with a r1ng like .port1on 16 of the body. On the; inner face of. eachstand ard is an uprightrib 17 ,,the inner surface of which aligns with the bore: 18 of the sleeve portion 11. At the lowere'nd of this sleeve; portion is v formed an inwardly extending flange 19 which provides an inward limit for the ease follower. The space .within; the .ve portion below the'tollowerconstitutes grease. receptacle as will .be readily the k understood.

The grease follower mentioned comprises a cylindrical tubular casing 30 and a lower head 31 secured thereto and freely slidable within the sleevebere 18 of the body. This follower constitutes also the casing for the loose hammer 20, Fig. 5. As'shown inthis figure, the head 81.11% a threadedihub33 which screws into 'the' interior of the hammer casing 30. A pin 34 passing through the sleeve wall and the threaded hub permanently lock these'parts together with the hammer loosely retained in the interior. At the upper end of the hammer casing is ahead 35 closing the casing. This head, in the form illustrated in Figs. 1 to 8 inclusive, has projecting arcuate flanges 36 separated by notches 87, to provide for engagement by a suitable removing device, as hereinafter ex- I are adapted to occupy downwardly facing recesses in the inner face of the ring portion 16 of the body, the upward pressure of the spring retaining the ring in this position.

More specifically, as shown particularly 1 in Fig. 4, the body ribs 17 are continued upwardly as at 60 about aconsiderably larger bore to the top of the body ring portion 16. Adjacent such stop surface the body ring has internal arcuate horizontal rib-s as indicated at 61 and at the end of these ribs are downwardly extending lugs 62, which project downwardly a material distance be% yond that of the ribs 61 but not as far as the ribs'60. Between the rib and the adjacent short vertical rib62 are notches 65.

Ininstalling the parts after the hammer casing with its spring is placed in the body bore 18, the ring 40 is turned (if necessary to bring the wings 51 directly over the arcuate passageways 65) and then the ring is pressed downwardly, compressing the spring 50 until the wings are lower than the bottom edge of the ribs 62 whereupon the ring is turned laterally a short distance until the wingspass beneath and beyond the ribs 62, whereupon on release of the pres-v sure the ring may rise with its Wings coming into the space'between the ribs 62 and 60 as illustrated in F ig. 4. "It will bev seen that the movement described eifectively locks the parts in position, the follower being pressed downwardly on the grease in the bore 18 by-the spring 50 and the upward pressure of the spring maintaining the wings 41 in place in the recesses described, so that the ring can neither rotate nor move upwardly, nor does it move downwardly until a suitable external pressure has been applied to it.

Fig. 2 shows theparts in the position just described. In use the position is the same except that the hammer casing extends upwardly above'the body a variable distance as indicated in Fig. 1, dependent upon the amount of grease within the chamber 18.

In opening the device for loading,'the ring 40 is pressed downwardly until its wings 41 are lower than the bottom of the rib 62 and then is turned laterally until these wings are within the arcuate openings 65, When the ring, the hammer casing and the spring may be removed from the body to allow the installation of grease into the chamber 18. j I

The ring is preferably permanently maintained 0n the hammer casing by means of theflanges 36 at the top of the casing heretofore mentioned, which overhang the ring,

and, as. shown, may seat in a rabbet 43 in the upper surface thereof. Such a construetion enables the entire top of the device to be flush when it is empty, as shown in Fig. 2, which has the advantage of enabling the normally upwardly projecting hammer casing to form a convenient tell-tale indicating the amo-untrof grease in the chamber.

The ring preferably has notches 42 in its 7 upper surface to enable a suitable tool to' conveniently rotate it.

Any suitable tool may be employed to press the ring 40 downwardly and give it a partial rotation necessary to free it. I have, however, illustrated in Figs. 5,6 and 7 a convenient tool for this purpose, which is'also adapted to easily draw out the ham mer casing, with the hammer and spring,

against the action of suction within the chamber 18. This device'will now be described. T

' 70 designates a suitable bail or looped handle having an upper horizontal reach and curved inwardly extending end portions. These end portion-s terminate in a.

suitable lugs adapted to coact with the locking ring 40 and the flanges 36 of the hammer casing These lugs designated 73, are

ring portion 71. This ring portion carries j i flange 74 secured by screws 75 to the ring portion 71 of the handle member. The lugs 73 are L-shaped at their lower ends, projecting inwardly and then slightly down-- wardly as at 78. These inner portions 78 are adapted to extend through the notches 37 of the hammer casing head 35, and thereafter the under surface 77 of the lugs may seat against the ring 40 and shove it downwardly. In such position these lugs occupy the notches 42, so that if the handle be 7 turned, the ring 40 is thereby moved into position to clear the ribs of the body, and at thesame time the inner extensions 78 pass beneath the arcuate ribs 36 of'the ham mer casing. Then the assembled movable parts may be drawn out and retained by the handle as shown in Fig. 6. The handle may conveniently be provided with outer lugs 79, preferably three in number to engage the outer surface of the body ring16 and initially position the handle.

' 12 of the ring 40. As soon as this registration is effected, the parts are in posit-ion so that the removing tool may be pressed downwardly to carry the ring 40 inwardly to unlock it. Then, the turning of the handle a" short portion of a rotation, frees the ring and at the same time brings the L-shaped ends of the lugs 7 3 beneath the hammer casinc flanges 36. v v i e n operation of the device, assuming that the lubricator is installed and grease, has been supplied, the hammercasing normally extends above the topofthe body,'as shown in Fig. 1.7 .Now, when'the inspector sees that the topofthe hammer casing is nearly or quite flush with thetop of the body he knows it is time to supply additional grease. Thereupon he places the removing tool over the-lubricator with the ends of the lugs 73, of 'which three are shown, 0ccupying the three notches 37 shown in the head ofthe hammer casing; thev under surfaces 77 of the lugs-either cutting the notches 42 or riding on the ring 40 between these notches. The operator then, if necessary, turns the handle a short distance (something less than. one-third offa rotation) to bring the notches37 intoregistration with the ring notches 42. He then presses downwardly on the removing tool to thelimit of its possible movement, that is, until stopped by the ring portion 71 abutting the casing body. He then turns the tool substantially onethird of a rotation in the left hand direction in the specific embodiment shown in Fig s. 3 ands. This turns the ring so that its wings 41 clear the body ribs and at the same time brings the L-shaped ends 7.8 ofthe lugs 73 beneath the hammer casing head flanges 36., The oper ator then pulls outwardly on thehandle removing the hammer casing, hammer, spring and locking. ring. v ,7 i f Havingnow removed ,all .the removable parts, the operatori'nserts the desired quantity of grease into the body chamber 18. This is most conveniently doneby dropping a grease cartridge into 1 said chamber. If the quantity of grease inserted extends materially above the top of the chamber 18, it maybe convenientlypushed or wiped out through the openings between the stand ards 15. I v 1 After renewing the grease supply,- the operator returns the-hammer casing, to the body, shoving it downwardly against the grease byv pressure on the handle, whichhas If the quantity of grease inserted is not exthereceptacle to shovethe grease ahead of preferably been retained in engagement with it. When the hammer casing is being returned, the inner surfaces of the ribs 17 form convenient guides for directlng its lower ends into 'positlon 1n the chamber 18.

cessive, the operator may then shove down-. wardly on the handle until the wings 41 of the ring pass to the bottomof the body notches 65, whereupon rotation in the right hand direction for substantially one sixth of a turn, brings the wings 11 beyond the ribs 62, and the same movement brings the lugs 7 3 into registration with the hammer casing notches 37 ,so' that when the pressure 1s released, the spring 50 returns the ring 40 to normal position and leaves theremoving tool simply resting on the lubricator free to be removed. V v 'f;

If toolarge a quantity of grease is placed in the receptacle, so that; the operator cannot force down the ring manually sufliciently to lock it, this will become evident by the fact that the central portion of the handle abuts the. top of the a hammer casing. The operator may then either remove some of the grease or, if he desires, may by hammer strokes on the top of the haridleZO, drive the hammer casing further down into it a suflicient distance to enable the. ring to be locked.

Figs-9,10 and 11 Ihave illustrated as a somewhat different embodiment of the lubricator. In this case, the locking ring, instead l o fseating within the body, is made external and passes over. it and cooperates with external ribs on it. The locking however, is effected by the samev manner as heretofore described by interacting-lugs which are nor- 1 fmallytretained in locked position by. the

spring50. v v. 3

As shown in these figures, the .body 10 has its lower portion asheretofore described, but above the horizontal fiangeflt it =is formed simply, with a short upward sleeve portion 8010i suflicient size to housethehammer casing 30 and the spring 50, thissleeve portion having at its upper end three equidistant arciiate outwardly extending ribs 81. The locking ringin this instance comprises a cap having atop portion 91 with a hole through which therhammer casing passes and a downwardly extending skii't 92. ,The

spring 50 bears at its upper end against the inner face of the capjtop 91, and the parts are retained permanently by aflang'elOO'on the hammer casing which seats within a rabbet in the top 91 v The skirt v92-hasat its lower edge three in ar'dly projecting arcu- I ate portions 95 each of which terminates in two, upwardly extending lugs 96 I I Fig.=9 shows the parts'of tliismodification' as it is being loaded. Sufiicient rotation of the cap ,9.0 brings the ribs 9 5 ijnto registration with the spaces between the ribs 81 of the body; then downward pressure onthe cap carries the ribs 95 and their upstanding lugs 96 below the ribs 81; then substantially one-sixth of a rotation carries the portions 95 of the cap directly beneath the lugs 81 with the two ribs 96 in position beyond the ends of such lugs; then, as the pressure is relieved, the spring 50 raises the cap so that each pair of lugs 96 embraces one of the ribs 81, while the intermediate cap lugs 95 abut the lower faces of such rib 81. This effectively locks the cap to the body.

The hammer casing in this instance is shown as provided with a head 101 above the flange 100, the casing being annularly recessed at 102 beneath the head 101. This overhanging head provides a convenient device for engagement of a suitable tool, as some kind of a clamp for instance, to remove the hammer casing from the grease chamber against the suction tending to retain it. The cap in this illustration may conveniently be depressed and rotated as desired by the hand of the operator.

In Figs. 12 and 13, I have illustrated another modification of the device still embodyingthe samegeneral principles. In this view, the body member lO 'is very similarto the body member ofFig. 2, though the top ring 116 is of slightly less depth than the ring portion 16, and the standards 115 are formed slightly differently from the standards 15. The top ring however, has an inwardly projecting portion 161 separated by arcuate recesses 165 and each inwardly projecting portion carries on its under side downwardly extending ribs 160 and 162. The locking ring in this instance, has a greater vertical extent than the ring 40 of Figs. 2 and 3, but has outward arcu- :ate wings 141 and top notches 142 corresponding to the wings and notches 41 and 42. The hammer casing in this .instance is shown as having a lateral flange130- overhanging the top of the ring 140 and lying within the rabbet provided by the arcuate ribs on the opposite sides of the notches 142. The upper end of the hammer casing is preferably formed with an eye 133 furnishing convenient means for the engagement' of -a suitable tool to, withdraw it. Some suitable tool (which may, of course be combined with theftool which engages the eye 153) servesto engage the notches 142 and push the ring inwardly and give it a portion of a rotation to free it.

It will be seen that in all the embodiments of the invention described, the essential locking feature is the same, namely, there is a movable ring acted on by the spring and having lugs which may be brought into coaction with, or released from the lugs on the body. by longitudinal and separate rotary movements of the ring. The longitudiin locked position; In other words, in each instance, the ring is forced downwardly against the action of the spring sufficiently to clear the body lugs and'is then given a partial rotation and then returned partway, into locked position. Other specific constructions embodying thislgeneral locking principle may be readily devised and'I do not intend to limit myself to any of the embodiments shown, except in suchclaims as plainly so indicated. V

The construction of the hammer casing may also be modified from that shown, and still obtain the same general result. The two parts of the hammer casing are made separable to enable a ready installment of the hammer. This separation however, need not take place at the'lower end as shown in Fig. 5, but may be made at any part of. the

hammer casing,at the lower end, upper 7' end or at some lntermediateport on; It is desirable however, after the hammer has been installed, that the separable parts of the hammer casing be permanently'secured together. M

Having thus described my invention, I claim Y 7 1. In a lubricating device, the combination with a lubricant receptacle, of a lubricant follower, and means associated with the follower to removably retain the follower in active position, said means being operative on an axially inward and outward movement to lockthe follower.

2. In a lubricating device, the combination with a lubricant receptacle, of a lubricant follower movable therein, and co -operating means between the, follower and receptaclefor removably retaining the follower in active position, said means including a member having an axially in and out motion relative to said receptacle.

3. In a lubricating device, the combination with a lubricant receptacle, of a lubricant follower carried thereby, and [means associated with the receptacle and follower for removablyretaining the follower in active positionv within the receptacle, said means being operative on an axially inward and outward motion relative to the receptacle for locking the follower.

receptacle for locking the follower in active position to the receptacle. said member being operative on an axially in and out m0- tion relative to the receptacle.

5. In a lubricator, the combination of a body having a grease receptacle, a hammer casing containing a loose hammer and the casing, the casing having a projection above the ring limiting the outwardgmovecasing occnp ing the body, a ring embrac ing the casing, the casing hav1ng a pro eca adapted to occupy the receptacle, a spring and a locking member acted on by the spring and normally retained by it in en- .gagement wit-h the body.

tained by it in engagement with the body.

7. In a lubricator, the combination of a body adapted to be secured to a part to be lubricated, and having a bore constituting a lubricant receptacle, a hammer casing extending into the lubricant receptacle, a loose hammer within the casing, said hammer casing having at its lower end an enlarged head slidably engaging the bore of the body, a ring embracing the hammer casing, a helical spring, surrounding the hammer casing and compressed between said enlarged head and said ring, and means for locking the ring to-the body.

8. In a lubricator, a bodyadapted to be secured to a part to be lubricated and having a lubricant receptacle, a tubular hammer casing containing aloose hammer and closed at its upper and lower ends, said casing occupying the body, a ring embracing ment of the ring andihaving a head at its lower-end, a spring surrounding the'casing and compressed between said head and said ring, and means. for-securing the ring to the body. v

9. In a-lubricator, a body adapted to .be secured to a part to be lubricated. and having a lubricant receptacle, a lubricant fol-j lower occupying the body, a ring embracing the follower, said follower having. a.

projection above the ring limiting the outward movementof the ring-and having a head at its lower end, a spring surroundin the follower and compressedbetween said head and said ring,'t-he ring andbody having coacting arcuately separated; lugs adapted to be brought into engagement by inward movement and" subsequent rotative movement and subsequent outward movement of the ring. and one of said. members.

having longitudinal lugs to prevent further rotative movement. of the ring after be secured to a part to be lubricated and having a lubricant receptacle, a tubular hammer casing containing a loose hammer and closed at'its upper and lowerends, said tion above the'ring limiting'the outward mer, casing,

the

' first mentioned lugs have come into engagement. i v Y 10. In a lubricatona body adapted'to movement of the-ring and having ahead at its lower, end, a helical oompressionspring .jsurrounding the casing and compressed bependent rotative movement of the ring, and

one of said members havinglongitudinal lugs to prevent further rotative movement.

of the ring after the first mentionedflugs have come into engagement; 7

11. In a lubricator, the combination of a body having an internal chamber, a follower adapted to occupy said chamber, a;- ring for lockingthe'follower to the body while allowing longitudinal movement of the follower, and a spring serving the double purpose of urging the follower downwardly and the locking ring upwardly into locked engagement. r p I 12 In a lubricatorg, the combination of a body having an internal chamber, a follower adapted to occupy. said chamber,

means for locking the follower to the body while allowing longitudinal;movement of the followenand a springserving the double purpose of urging the follower downwardly and'retaining the lockingmeans active,

said body having an inward projection limiting the inward movement of the follower. In a lubricator, the combination of a body having an internal chamber, a hammer casing adapted to occupysaid chamber, a

loose hammer within the.casing,'a ring for looking the hammer. casing to the body while allowing longitudinal movement of the hama. spring serving the double purpose of urging the hammer casing downwardly into locking engagement, said body having an inward projection adj acent it-s inn er end limiting the inward movement of the hammer casing. j 14. In a lubricator, the combi ation of a body having a lubricant chamber, ahamand the locking ring upwardly.

mer casing adapted to occupy; said chamber and having top and bottom heads, a ring surrounding the. hammer cas ng between said heads, a spring surrounding the'hammer casing and compressed betweenthe' lower head-and the inner face of the ring, coactinglugs on the bodyandring whereby the ring maybe held 'to the body by an outward action of the spring but freed there: from by inward pres-sure plus a rotative movement, and a shoulder; at the inner end of the body limiting the inward movement of the hammer casing 'and'preventing the same normally passing inwardly far enough.

to'set-free-the spring. v ;v

15. In a lubricator, the .combinationof a body'having a lubricant chamber, a follower adapted to occupy-said chamber-,a ringsurrounding the followe r,-,a T spring bearing.

againstthe inner face; of the ring, coacting lugs on the body and ring whereby the ring 7 'may be held to the body by the outward action of the spring, but freed. therefrom by inward pressure plus a rotative movement, there being means on the upper end of the [follower fOrGHabling its engagement by a suitable tool whereby it may be withdrawn. 16. In a lubricator, the combination of a body having a lubricant chamber, a hammer casing adapted to occupy said chamber, a

drawn.

17. In a lubricator of the class described, the combination of a body having a downward extension adapted to seat within a V member to be lubricated and having an outward flange above such portion, and an upward extension above the flange, 83 16,111)- ward extension being provided withspaced lugs, a locking ring having spaced lugs adapted to pass downwardly between the lugs of the body and-to be rotated to pass beneath the same, one of said members having longitudinally extending lugs to engagethe edge of the lugs on the other member and thereafter prevent rotation of the ring,

7 a' lubricant follower, and spring means acting downwardly on the follower and upwardly ,on the ring.

18. In a lubricator of the class described,

' the combination of a body having a downward extension adapted to seat within a member to be lubricated and having an out ward flange above such portion and an upward extension above the flange, said upward extension being provided with spaced arcuate lugs, a locking ring having spaced arcua'te lugs adapted to pass downwardly between the lugs of the body and to be rotated to pass beneath the same, one of said members having longitudinally extending lugs to engage the arcuate ends of the lugs on the other member and thereafter prevent rotation of the ring, a hammer casing, a loose hammer therein, a spring surrounding the casing and acting downwardly vthereon and upwardly on the ring, said cas- 7 ing having a projection above the ring, and

a projection below the spring.

19. In a lubricator of the class vdescribed, the combination of a body adapted to be secured to a part to be lubricated, a hammer V casing made in separable parts and containing a loose hammer, said casing being a closed unit in use and having upper and lower heads, a locking ring embracing the casing beneath the upper'head and adapted to coact with the-body, a helical compression spring between'the lower head and ring, and an inward flange at the lower end of the body adapted to limit the inward move ment of the hammer casing.

20. The combination with a lubricant having a body, a lubricant follower,'a locking ring coacting with the body by reason of longitudinal movement and rotative move ment of the ring, and a'tool adapted to press 5 ing ring coacting with the body by reason of longitudinal movement and rotative move ment of the ring, and a tooladapted to' press the ring inwardly and partiallyrotate it, and means whereby the tool may withdraw the follower and ring as a unit.

23. The combination with a lubricator having a'body, a lubricant follower, a look ing ring coacting with the body by reason of a spring surrounding the follower and compressed'between a projection thereon and the ring, a tool adapted to press the ring inwardly and partially rotate it, and means whereby such tool may withdraw the follower springand ring as a unit.

24:. The combination with a 7 lubricator ha'vinga body, a movable lubricant hammer and a casing therefor, a locking device for the movable parts,'and a tool adapted to unlock the lubricator and remove the casing and hammer. V 3

25. In a lubricating device of the class described, the combination of a body, a reciprocating hammer, and means to removably retain the hammer in active position, com-' prising alocking member locked to: the body by a combined longitudinal and separate rotative movement of the'locking member.

26. In a lubricatingdevice ofthe class described, the combination of a body,fol lower spring pressed against the lubricant, and means to removably retain the follower in active position, comprising a locking member engaging the follower and locked to the body by a combined inward and outward and rotative movement;

' 27. In a lubricator'of'the class described,

lubricant, a hammer casing longitudinally movable therein and a locking member en the combinationof abody adapted to contain gaging the hammer casing and the body, said locking member and body having coacting lugs brought into engagement by a combined longitudinal and rotative movement of thelocking member.

28. In a lubricator of the class described, the combination of a body adapted to contain lubricant, a hammer casing longitudinally movable therein, a locking member engaging the hammer casing and the body, said locking member and body having coacting; lugs adapted to be brought into locking engagement by a combined longitudinal and rotative movement oft-he locking member, and a. spring acting on the locking member to normally retain such engagement.

29. The combination with. a body having a. lower portion and an upper portion, the lower portion being adapted to be secured to a part to be lubricated, and the upper portion extending above said part, spaced ribs connecting the upper and lower members of the body, a hammer casing containinga loose hammer and carried by said body and guided by said ribs, a locking member associated with the upper portion of the body, and a spring serving the double purpose of urging the casing in one direction and the locking mcmber in theopposite direction into locked engagement with the body.

30. In a lubricator, the combination with a body having a lower portion and an upper portion, spaced ribs connecting said portions, a hammer casing disposed within the body and guided by the ribs, a locking member associated with the casing and the upper portion ofthe body, and a springacting upon said casing and member to urge the casing into the body and force the member into locked position, said ribs providing an open space intermediate the upper and lower portions whereby excessive lubricant may be removed.

Bl. The combination with a lubricator having a body, of a removable lubricant hammer, acasing therefor, a locking ring associated with the casing and body, and means for rotating said ring to unlock the lubricator and remove the casing and hammer.

In testimony whereof, I hereunto affix my signature.

FRANK M. ROBY. 

